CN218915824U

CN218915824U - Opening-closing integrated dryer

Info

Publication number: CN218915824U
Application number: CN202223100814.1U
Authority: CN
Inventors: 赵玉斌; 耿延凯; 陈田青; 陆文远
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-04-25
Anticipated expiration: 2032-11-22

Abstract

The utility model relates to an opening and closing integrated dryer, comprising: a housing; the heat pump system comprises a compressor, a first flow path switching device, an indoor condenser, a second flow path switching device, an indoor evaporator and an outdoor heat exchanger, wherein one sides of the indoor evaporator and the outdoor heat exchanger which are not connected with the second flow path switching device are respectively connected through a throttling device, the indoor evaporator is arranged in a second cavity, and the outdoor heat exchanger is arranged in a third cavity; the indoor condenser is arranged in the first chamber; the sensible heat exchanger is characterized in that a first channel of the sensible heat exchanger is communicated with an air inlet and an air inlet side of the indoor evaporator, and a second channel of the sensible heat exchanger is communicated with an air outlet side of the indoor evaporator and an air inlet side of the indoor condenser; the auxiliary fan drives part of air entering from the air inlet to enter the sensible heat exchanger; and the pressure buffer device is used for buffering the pressure of the high-pressure refrigerant flowing out of the indoor evaporator or the pressure of the high-pressure refrigerant flowing out of the outdoor heat exchanger. The utility model realizes multiple demand modes of the drying chamber.

Description

Opening-closing integrated dryer

Technical Field

The utility model relates to the technical field of air source heat pump drying, in particular to an opening and closing integrated dryer.

Background

With the continuous advance of the coal changing process, the air source heat pump dryer is gradually used as main stream equipment for changing the coal into electricity, for example, the air source heat pump dryer can be used for drying tobacco.

See application number 202221027086.3, entitled "a heat pump drying equipment and heat pump roast room", provided and adopted the heat pump system can provide the mode of rising temperature, the mode of rising temperature and moisture removal and steady temperature and moisture removal mode multiple mode for the drying chamber.

Under the heating mode, the inner fan and the electric heater are operated by closing the dehumidifying valve and the fresh air valve, the drying chamber forms a closed space, and the electric heater is adopted to heat the drying chamber.

Under the mode of heating up and dehumidifying, the inner fan, the compressor and the auxiliary fan are operated by closing the dehumidifying valve and the fresh air valve, the drying chamber forms a closed space, the heating is realized by utilizing the heat pump system, and meanwhile, the condensation dehumidification is realized by the evaporator.

Under the mode of stable temperature and dehumidification, through opening dehumidification valve and new trend valve, interior fan, compressor and auxiliary blower operation, the drying chamber forms open space, discharges the external environment with damp and hot air through the dehumidification valve, and introduces external low temperature new trend in order to supplement in the curing barn through the new trend valve to maintain the interior temperature of drying chamber of curing barn unchanged.

However, in the above-described method, the heat pump system is only an evaporator and a condenser, and therefore, in the heating method, the heat pump system is not started, so that only an electric heater is used for heating, the heating efficiency is low, and the cooling and refrigerating operation at a high temperature in the drying chamber cannot be realized.

In addition, because the evaporator and the condenser are both positioned in the baking room, the heat pump system is not circulated with the outside air, so that the heating efficiency is low when the heat pump system is used for heating and dehumidifying, and meanwhile, the dehumidifying valve and the fresh air valve are required to be opened when the temperature is stabilized and dehumidifying is carried out, so that the baking room is in an open baking mode, the energy efficiency of the heat pump system is reduced, and the baking effect is influenced.

Disclosure of Invention

The utility model provides an opening-closing integrated dryer, which realizes multiple demand modes of a drying chamber by switching states of an indoor condenser, an indoor evaporator and an outdoor heat exchanger, improves closed heating efficiency and dehumidifying efficiency of the drying chamber, can provide a cooling and refrigerating mode for the drying chamber, and is convenient for realizing constant temperature control of the drying chamber.

The application provides an switching integral type drying-machine is connected with the drying chamber of heat pump roast room, include:

the shell is provided with a first chamber, a second chamber and a third chamber, the first chamber is provided with an air inlet and an air outlet which are communicated with the drying chamber, the first chamber or the drying chamber is provided with an inner fan for introducing hot air into the drying chamber, and the third chamber is communicated with external fresh air;

The heat pump system comprises a compressor, a first flow path switching device, an indoor condenser, a second flow path switching device, an indoor evaporator and an outdoor heat exchanger which are connected through refrigerant pipelines;

the first flow switching device is used for switching the refrigerant discharged from the compressor to flow out to one side and the other side of the indoor condenser;

the second flow path switching device is used for switching the refrigerant at the other side to flow out to the indoor evaporator and the outdoor heat exchanger;

the indoor evaporator and the outdoor heat exchanger are respectively connected with one side of the second flow path switching device, which is not connected with the indoor evaporator, and the indoor evaporator is arranged in the second cavity, and the outdoor heat exchanger is arranged in the third cavity;

the indoor condenser is arranged in the first chamber, and the air inlet side and the air outlet side of the indoor condenser are respectively communicated with the air inlet and the air outlet of the first chamber and are used for conveying air flow entering from the air inlet into the drying chamber through the indoor condenser;

the sensible heat exchanger is provided with a first channel and a second channel which are arranged in a staggered manner, the first channel is communicated with an air inlet and an air inlet side of the indoor evaporator, the second channel is communicated with an air outlet side of the indoor evaporator and an air inlet side of the indoor condenser, and the sensible heat exchanger is used for exchanging heat of air flow introduced into the second chamber after passing through the indoor evaporator, and then returning to the air inlet side of the indoor condenser;

The auxiliary fan drives part of air entering from the air inlet to enter the sensible heat exchanger;

and a pressure buffer device arranged on a flow path between the indoor evaporator and the outdoor heat exchanger, which is not connected with one side of the second flow path switching device, and used for buffering the pressure of the high-pressure refrigerant flowing out of the indoor evaporator or the pressure of the high-pressure refrigerant flowing out of the outdoor heat exchanger.

The three heat exchangers including the indoor condenser, the indoor evaporator and the outdoor heat exchanger are arranged, and the heat exchange modes of the three heat exchangers are switched through the first flow path switching device and the second flow path switching device, so that the efficient closed type heating mode, the efficient closed type refrigerating mode and the efficient closed type dehumidifying mode can be realized.

And meanwhile, the pressure buffer device is additionally arranged, so that the heat pump system can be ensured to reliably operate.

In some embodiments of the present application, to assist in heating the air flow into the drying chamber, the opening and closing integrated dryer further includes:

the auxiliary electric heating device is arranged in the first cavity and arranged on the air outlet side of the indoor condenser and is used for auxiliary heating of air flow entering the drying chamber.

In some embodiments herein, the indoor evaporator divides the second chamber into:

A first subchamber respectively communicated with an outlet of a first channel of the sensible heat exchanger and an air inlet side of the indoor evaporator, and used for receiving air flow to be in heat exchange with the indoor evaporator;

and the second sub-chamber is respectively communicated with the inlet of the second channel of the sensible heat exchanger and the air outlet side of the indoor evaporator and is used for receiving the air flow after heat exchange with the indoor evaporator.

In some embodiments of the present application, in order to improve a better dehumidification effect and a better heat exchange effect on the hot air flow of the drying chamber, the sensible heat exchanger is obliquely arranged at one side of the indoor evaporator and is used for separating the first chamber and the second chamber; the indoor evaporator is vertically arranged in the second cavity, and the top end of the indoor evaporator is abutted with the part, extending into the second cavity, of the sensible heat exchanger;

the two sides of the indoor evaporator, the side walls of the second chamber, and the outlet side of the first channel and the inlet side of the second channel define the first subchamber and the second subchamber, respectively.

In some embodiments of the present application, the auxiliary blower is disposed at an inlet side of the first passage, and the auxiliary blower, a sidewall of the first chamber, and the inlet side of the first passage define a sealed space.

The hot air flow introduced by the auxiliary fan enters the sensible heat exchanger, and then returns to the sensible heat exchanger for heat exchange after heat exchange by the indoor evaporator, so that the temperature of the hot air flow in the drying chamber is prevented from fluctuating while dehumidification is realized.

In some embodiments of the present application, closed dehumidification is achieved by the indoor evaporator, so that efficiency is improved, but the indoor evaporator cools the hot and humid air flow into condensed water, so that in order to avoid moisture in the condensed water from being brought into the drying chamber again, a condensed water collecting device is provided, and the condensed water collecting device is used for collecting condensed water generated when the indoor evaporator evaporates and absorbs heat;

in addition, the heat pump system is also provided with a discharging device, the discharging device is connected with the condensed water collecting device and is used for discharging condensed water collected in the condensed water collecting device and discharging the condensed water, so that the influence on the humidity of air flow entering the drying chamber is avoided.

In some embodiments of the present application, the first flow path switching device is a first four-way valve, and the second flow path switching device is a second four-way valve;

when the first four-way valve and the second four-way valve are closed, the refrigerant flowing out of the compressor sequentially passes through the first four-way valve, the indoor condenser, the indoor evaporator, the throttling device and the outdoor heat exchanger, and then returns to the compressor.

At this time, the indoor condenser and the indoor evaporator are both used as condensers, and the outdoor heat exchanger is used as an evaporator, so that heating of the drying chamber is realized.

When the first four-way valve is closed and the second four-way valve is opened, the refrigerant flowing out of the compressor passes through the first four-way valve, the indoor condenser, the outdoor heat exchanger, the throttling device and the indoor evaporator in sequence, and then returns to the compressor.

At this time, the indoor condenser and the outdoor heat exchanger are both used as condensers, and the indoor evaporator is used as an evaporator, so that the temperature rise and dehumidification of the drying chamber are realized.

When the first four-way valve is opened and the second four-way valve is closed, the refrigerant flowing out of the compressor passes through the first four-way valve, the indoor evaporator, the throttling device and the outdoor heat exchanger in sequence, and then returns to the compressor.

At this time, the indoor evaporator is used as a condenser, and the outdoor heat exchanger is used as an evaporator, so that the ordinary drying in the drying chamber is realized.

When both the first four-way valve and the second four-way valve are opened, the refrigerant flowing out from the compressor passes through the first four-way valve, the outdoor heat exchanger, the throttling device and the indoor evaporator in sequence, and then returns to the compressor.

At this time, the outdoor heat exchanger is used as a condenser, and the indoor evaporator is used as an evaporator, so that the ordinary refrigeration in the drying chamber is realized.

Through switching the different states of first cross valve and second cross valve, can switch the heat transfer mode of three kinds of heat exchangers of indoor condenser, indoor evaporimeter and outdoor heat exchanger, satisfy the multiple demand of drying chamber.

In some embodiments of the present application, the heat pump system further includes a return branch, and a capillary tube is disposed on the return branch, for forming a pressure difference of the first four-way valve, so as to ensure that the first four-way valve is switched normally.

The first four-way valve is provided with a C end, an E end, a D end and an S end;

when the first four-way valve is closed, the D end and the C end of the first four-way valve are connected, the E end and the S end of the first four-way valve are connected, and when the first four-way valve is opened, the D end and the E end of the first four-way valve are connected, and the C end and the S end of the first four-way valve are connected;

the end D is connected with a refrigerant discharge port of the compressor, the end C is connected with one side of the indoor condenser, and the end E is respectively connected with the second four-way valve, the other side of the indoor condenser and one end of the reflux branch; the other end of the reflux branch is connected with the S end.

In some embodiments of the present application, the pressure buffering device includes:

A first accumulator provided in a flow path between the throttle device and the indoor evaporator, for buffering pressure of the high-pressure refrigerant flowing out of the indoor evaporator;

and a second accumulator provided in a flow path between the throttle device and the outdoor heat exchanger, for buffering pressure of the high-pressure refrigerant flowing out of the outdoor heat exchanger.

In some embodiments herein, the pressure buffering device comprises:

the liquid storage device is connected in series with the throttling device and forms a branch, and the refrigerant flow direction in the branch is from the liquid storage device to the throttling device;

a first switching assembly for connecting a side of the indoor evaporator, to which the second flow path switching device is not connected, and the branch for buffering the pressure of the high-pressure refrigerant flowing out of the indoor evaporator;

and a second switching assembly for connecting a side of the outdoor heat exchanger, which is not connected with the second flow path switching device, and the branch path for buffering the pressure of the high-pressure refrigerant flowing out of the outdoor heat exchanger.

Drawings

Fig. 1 illustrates a block diagram of an opening and closing all-in-one dryer according to some embodiments;

fig. 2 illustrates a block diagram of an opening and closing integrated dryer connected to a drying chamber according to some embodiments;

FIG. 3 illustrates a schematic diagram of a heat pump system in an open-close integrated dryer in accordance with some embodiments;

FIG. 4 illustrates a schematic diagram of the operation of a heat pump system in an open-close integrated dryer according to some embodiments;

FIG. 5 illustrates a second operational schematic of a heat pump system in an open-close integrated dryer according to some embodiments;

FIG. 6 illustrates a third operational schematic of a heat pump system in an open-close integrated dryer according to some embodiments;

FIG. 7 illustrates a fourth operational schematic of a heat pump system in an open-close integrated dryer according to some embodiments;

FIG. 8 illustrates a schematic diagram II of a heat pump system in an open-close integrated dryer according to some embodiments;

fig. 9 illustrates a third schematic diagram of a heat pump system in an open-close integrated dryer according to some embodiments.

Reference numerals:

100-dryer; 110-an indoor condenser; 120-an indoor evaporator; 130-an outdoor heat exchanger; 140-sensible heat exchanger; 141-a first air inlet; 142-a first air outlet; 143-a second air inlet; 144-a second air outlet; 150-auxiliary electric heating means; 160-a compressor; 170-a first flow path switching device; 170' -a second flow path switching device; 180-throttle device; 190-capillary;

F1-an inner fan; f2-an auxiliary fan; f3-an exhaust fan; b-a gas-liquid separator;

210-a drying chamber; 220-inlet; 230-outlet;

310-a first shutter element; 320-a second shutter element; 410-a third shutter element; 420-fourth closing element;

500-a first reservoir; 500' -a second reservoir;

600-a first filter; 600' -second filter.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The present application relates to an opening and closing integrated dryer 100, which is connected to a drying chamber 210, for drying articles (e.g., tea leaves) in the drying chamber by using a heat pump drying method.

As follows, a specific description will be given with reference to fig. 1 to 7.

The opening and closing integrated dryer 100 includes a housing and a heat pump system provided in the housing.

The heat pump system includes a compressor 160, a first flow path switching device 170, an indoor condenser 110, a second flow path switching device 170', a throttle device 180, an indoor evaporator 120, and an outdoor heat exchanger 130, which are connected by refrigerant lines.

The gas-liquid separator B is designed at the gas inlet end of the compressor 160, and can store the liquid part in the refrigerant returned to the compressor 160, so as to prevent the liquid refrigerant from entering the compressor 160.

The working principle of the heat pump system is as follows: the high-temperature and high-pressure gaseous refrigerant is discharged from the compressor 160, is discharged through the condenser to be changed into a low-temperature and high-pressure liquid refrigerant, is changed into a low-temperature and low-pressure liquid refrigerant through the throttling device 180, is absorbed by the evaporator to be changed into a low-temperature and low-pressure gaseous refrigerant, and is returned to the compressor 160 for compression after passing through the gas-liquid separator B to enter the next cycle.

In the present application, the first flow switching device 170 is used to switch the outflow of the refrigerant discharged from the compressor 160 to one end of the indoor condenser 110 and the second flow switching device 170'.

That is, the refrigerant discharged from the compressor 160 flows out to either one end of the indoor condenser 110 or the second flow switching device 170' through the first flow switching device 170.

The second flow path switching device 170' serves to switch the refrigerant discharged from the compressor 160 or the refrigerant at the other side of the indoor condenser 110 to flow out to the indoor evaporator 120 and the outdoor heat exchanger 130.

That is, the refrigerant discharged from the compressor 160 or the refrigerant at the other side of the indoor condenser 110 flows out to either the indoor evaporator 120 or the outdoor heat exchanger 130 through the second flow switching device 170'.

And is connected between a side of the indoor evaporator 120 to which the second flow path switching device 170 'is not connected and a side of the outdoor heat exchanger 130 to which the second flow path switching device 170' is not connected through the restriction device 180.

By controlling the switching of the states of the first and second flow path switching devices 170 and 170', the states of the indoor condenser 110, the indoor evaporator 120, and the outdoor heat exchanger 130 are switched to satisfy various demands, such as temperature rising, cooling, dehumidification, etc., in the drying chamber 210.

Referring to fig. 1 and 2, the space in the housing is divided into a first chamber a, a second chamber B and a third chamber C, wherein an air inlet OA1 and an air outlet OA2 are formed in the first chamber a, and the air inlet OA1 and the air outlet OA2 are respectively communicated with the drying chamber 210.

The air inlet OA1 of the first chamber a communicates with the outlet 230 of the drying chamber 210, and the air outlet OA2 communicates with the inlet 220 of the drying chamber 210.

An inner fan F1 is disposed in the first chamber a or the drying chamber 210, specifically, disposed in the first chamber a near the air outlet OA1, for introducing the air flow from the first chamber a into the inlet 220 of the drying chamber 210 through the air outlet OA2 by the inner fan F1.

The air inlet OA1 of the first chamber a returns the air flow exiting the outlet 230 of the drying chamber 210.

The first chamber a is provided with an indoor condenser 110, and an air inlet side and an air outlet side of the indoor condenser 110 are respectively communicated with an air inlet OA1 and an air outlet OA2 of the first chamber a.

The air inlet OA1 is disposed at the bottom of the first chamber a, the air outlet OA2 is disposed at the top of the first chamber a, the indoor condenser 110 is disposed below the air outlet OA2, and in particular is disposed below the inner fan F1 disposed at the air outlet OA 2.

After the air flow flowing in through the air inlet OA1 of the first chamber a passes through the indoor condenser 110, the air flow is driven by the indoor fan F1 to be sent into the drying chamber 210 through the air outlet OA 2.

An auxiliary electric heating device 150 is further disposed in the first chamber a, specifically between the air outlet side of the indoor condenser 110 and the inner fan F1, and is communicated with the drying chamber 210 through the inner fan F1.

The auxiliary electric heating device 150 is used for providing auxiliary heat supply in the cold start stage to accelerate temperature rise, belongs to a standby power supply, and is particularly suitable for being used in an extremely low-temperature environment.

The indoor evaporator 120 is disposed in the second chamber B.

The third chamber C is provided with a fresh air inlet OA3 and an air outlet OA4 communicated therewith, and the outdoor heat exchanger 130 is located in the third chamber C.

An exhaust fan F3 is provided at the exhaust outlet OA 4.

The fresh air inlet OA3 receives the external fresh air, exchanges heat with the outdoor heat exchanger 130, and is driven by the exhaust fan F3 to be exhausted to the outside through the exhaust outlet OA 4.

The outdoor heat exchanger 130 is vertically disposed in the third chamber C to divide the third chamber C into a third sub-chamber C1 and a fourth sub-chamber C2.

The third sub-chamber C1 communicates with the fresh air inlet OA3 and the air inlet side of the outdoor heat exchanger 130, and is used for performing heat exchange on the external fresh air introduced through the fresh air inlet OA 3.

The fourth sub-chamber C2 communicates with the air outlet OA4 and the air outlet side of the outdoor heat exchanger 130, and is configured to exhaust the air flow after heat exchange to the outside through the air outlet OA4 by the air exhaust fan F3.

Because the outdoor heat exchanger 130 exchanges heat with the external fresh air and the introduced external fresh air exchanges heat with the outdoor heat exchanger 130 entirely, the efficiency of the heat pump system can be improved.

Referring to fig. 1 and 2, the heat pump system further includes a sensible heat exchanger 140.

The sensible heat exchange 140 includes first and second passages alternately arranged (e.g., perpendicular to each other) and serves to separate the first and second chambers a and B.

The first channel has two ends respectively forming a first air inlet 141 and a first air outlet 142, and the second channel has two ends respectively forming a second air inlet 143 and a second air outlet 144.

The first air inlet 141 is communicated with the air inlet OA1, the first air outlet 142 is communicated with the air inlet side of the indoor evaporator 120, the second air inlet 143 is communicated with the air outlet side of the indoor evaporator 120, and the second air outlet 144 is communicated with the air inlet side of the indoor condenser 110.

In addition, an auxiliary fan F2 is provided at the first air inlet 141 side of the first passage for introducing a part of the air flow from the air inlet OA1 into the first passage.

In the present application, referring to fig. 1 and 2, the sensible heat exchanger 140 is disposed obliquely between the first chamber a and the second chamber B such that one end of the sensible heat exchanger 140 protrudes into the first chamber a and the opposite end of the sensible heat exchanger 140 opposite to the one end protrudes into the second chamber B.

The indoor evaporator 120 is vertically disposed in the second chamber B such that the top end of the indoor evaporator 120 is protruded into the pair of ends of the second chamber B against the sensible heat exchanger 140, thereby dividing the second chamber B into a first sub-chamber B1 and a second sub-chamber B2.

The first sub-chamber B1 is defined by an outlet side of the first air outlet 142 of the sensible heat exchanger 140, a sidewall of the second chamber B, and an air inlet side of the indoor evaporator 120.

The second sub-chamber B2 is defined by an inlet side of the second air inlet 143 of the sensible heat exchanger 140, a sidewall of the second chamber B, and an air outlet side of the indoor evaporator 120.

In this way, it can be ensured that the air flow flowing out of the first passage of the sensible heat exchanger 140 is returned to the second passage through the indoor evaporator 120.

The auxiliary fan F2 is vertically disposed in the first chamber a with its top end extending into the one end of the first chamber a against the sensible heat exchanger 140, thereby dividing the first chamber a into a first sub-chamber A1 and a second sub-chamber A2.

The sub-chamber two A2 is surrounded by the auxiliary fan F2, the inlet side of the first air inlet 141 of the sensible heat exchanger 140, and the sidewall of the first chamber a.

The first sub-chamber A1 is a remaining portion of the first chamber a excluding the second sub-chamber A2, the air inlet OA1 and the air outlet OA2 are respectively communicated with the first sub-chamber A1, and the indoor condenser 110 and the auxiliary electric heater 150 are disposed in the first sub-chamber A1 as described above.

In this way, it is possible to ensure that the air flow introduced by the auxiliary fan F2 is all sent to the first passage of the sensible heat exchanger 140.

The opening and closing integrated dryer 100 disclosed herein can provide the dryer 100 with various operation modes when switching the states of the first and second flow path switching devices 170 and 170'.

In this application, referring to fig. 3, the first flow switching device 170 is a first four-way valve, and the second flow switching device 170' is a second four-way valve.

The four-way valve has a power-on open and a power-off closed state, i.e., the first four-way valve 170 has an open state and a closed state, and the second four-way valve 170' has an open state and a closed state.

In both the first four-way valve 170 and the second four-way valve 170', the refrigerant flowing out of the compressor 160 passes through the first four-way valve 170, the indoor condenser 110, the indoor evaporator 120, the throttle device 180, and the outdoor heat exchanger 130 in this order, and then returns to the compressor 160.

When the first four-way valve 170 is closed and the second four-way valve 170' is opened, the refrigerant flowing out of the compressor 160 passes through the first four-way valve 170, the indoor condenser 110, the outdoor heat exchanger 130, the throttling device 180, and the indoor evaporator 120 in this order, and then returns to the compressor 160.

When the first four-way valve 170 is opened and the second four-way valve 170' is closed, the refrigerant flowing out of the compressor 160 passes through the first four-way valve 170, the indoor evaporator 120, the throttle device 180, and the outdoor heat exchanger 130 in this order, and then returns to the compressor 160.

When both the first and second four-way valves 170 and 170' are opened, the refrigerant flowing out of the compressor 160 passes through the first four-way valve 170, the outdoor heat exchanger 130, the throttling device 180, and the indoor evaporator 120 in order, and then returns to the compressor 160.

The four-way valve has a state of power-on and power-off, and has four terminals, a C terminal, a D terminal, an E terminal, and an S terminal, and when two of the terminals are connected, the remaining two terminals are also automatically connected.

When the four-way valve is powered off and closed, the C end is communicated with the D end, and the E end is communicated with the S end.

When the four-way valve is electrified to be closed, the C end is communicated with the S end, and the E end is communicated with the D end.

Referring to fig. 3, in the present application, the discharge port of the compressor 160 is connected to the D end of the first four-way valve 170, the C end is connected to one side of the indoor condenser 110, and the E end is connected to the other side of the indoor condenser 110 and the second four-way valve 170 '(specifically, the D end of the second four-way valve 170').

When the first four-way valve 170 is powered off (i.e., the C and D ends are in communication and the E and S ends are in communication), the refrigerant discharged from the compressor 160 flows to one side of the indoor condenser 110 through the D and C ends, and thereafter the refrigerant discharged from the other side of the indoor condenser 110 flows out to the second four-way valve 170 '(specifically, the D end of the second four-way valve 170').

When the first four-way valve 170 is powered on (i.e., the C terminal and the S terminal are in communication, and the E terminal and the D terminal are in communication), the refrigerant discharged from the compressor 160 flows out to the second four-way valve 170 '(specifically, the D terminal of the second four-way valve 170').

In order to ensure reliable switching of the first four-way valve 170, a pressure differential needs to be created within the first four-way valve 170, and therefore, a return branch is provided.

A capillary 190 is provided in the return branch.

One end of the return branch is connected to the S end of the first four-way valve 170, and the other end is connected to the other side of the indoor condenser 110, the E end of the first four-way valve 170, and the second four-way valve 170 '(specifically, the D end of the second four-way valve 170').

When the first four-way valve 170 is powered off (i.e., the C and D terminals are in communication, and the E and S terminals are in communication), the refrigerant discharged from the compressor 160 flows to one side of the indoor condenser 110 through the D and C terminals.

Thereafter, a portion of the refrigerant discharged from the other side of the indoor condenser 110 enters the S-side of the first four-way valve 170 through the return branch and flows out through the E-side of the first four-way valve 170, and then merges with another portion of the refrigerant discharged from the other side of the indoor condenser 110 to the second four-way valve 170 '(specifically, the D-side of the second four-way valve 170').

As described above, the flow rate of the refrigerant entering the return branch is small, and most of the refrigerant flows out to the second four-way valve 170' through the indoor condenser 110.

When the first four-way valve 170 is powered on (i.e., the C and S terminals are in communication, and the E and D terminals are in communication), the refrigerant discharged from the compressor 160 is branched into a first portion and a second portion by a portion of the D and E terminals.

The first portion enters the other side of the interior condenser 110 and exits from one side of the interior condenser 110 to the C and S ends of the first four-way valve 170.

The second portion enters the return branch and passes through the capillary tube 190 before entering the S-side of the first four-way valve 170.

The two parts flow out to the second four-way valve 170 '(specifically, the D end of the second four-way valve 170') through the S end and the E end of the first four-way valve 170 after converging at the S end of the first four-way valve 170.

Thus, by setting the return branch, whether the first four-way valve 170 is in the power-off or power-on state, the refrigerant in the first four-way valve 170 can be well ensured to flow through, and the pressure difference in the first four-way valve 170 is ensured, so that normal switching is ensured.

As described above, the flow rate of the refrigerant entering the return branch and the indoor condenser 110 is small, and most of the refrigerant flows out to the second four-way valve 170'.

When the second four-way valve 170' is de-energized (i.e., the C and D ends are in communication and the E and S ends are in communication), the refrigerant flows through the D and C ends of the first four-way valve 170 to the indoor evaporator 120 and then out to one side of the outdoor heat exchanger 130 through the restriction 180.

When the second four-way valve 170' is powered on (i.e., the C and S ends are in communication, and the E and D ends are in communication), the refrigerant flows out of the outdoor heat exchanger 130 through the D and E ends of the first four-way valve 170, and further flows out to one side of the indoor evaporator 120 through the throttling device 180.

Wherein the indoor evaporator 120 and the outdoor heat exchanger 130 are disposed in series.

Each of the first flow path switching device 170 and the second flow path switching device 170' described above may be implemented by a combination of a plurality of opening/closing devices (for example, solenoid valves).

The flow direction of the refrigerant when the operation of the first four-way valve 170 and the second four-way valve 170' is switched will be described with reference to fig. 3 to 7.

(1) When both the first and second four-way valves 170 and 170' are powered off

The refrigerant flow path is described below.

Referring to fig. 3 and 4, the high-temperature and high-pressure gaseous refrigerant is discharged from the compressor 160, passes through the D end and the C end of the first four-way valve 170, enters the indoor condenser 110, passes through the D end and the C end of the second four-way valve 170 'after being discharged by the indoor condenser 110, enters the indoor evaporator 120 to continuously discharge heat, becomes the low-temperature and high-pressure liquid refrigerant, passes through the throttling device 180, becomes the low-temperature and low-pressure liquid refrigerant, and then passes through the outdoor heat exchanger 130 to absorb heat, becomes the low-temperature and low-pressure gaseous refrigerant, passes through the E end and the S end of the second four-way valve 170' and the gas-liquid separator B, and then flows back to the compressor 160 to be compressed, and enters the next cycle.

In this process, referring to the dashed box in fig. 4, both the indoor condenser 110 and the indoor evaporator 120 function as condensers to provide heat to the air flow in the drying chamber 210; referring to fig. 4, a dashed box shows that the outdoor heat exchanger 130 functions as an evaporator.

(11) When only the inner fan F1 is operated, the pressure of the drying chamber 210 increases, forcing its inner air from the outlet 230 of the drying chamber 210 and the air inlet OA1 of the first chamber a into the first chamber a.

As the inner fan F1 is operated, it enters the first chamber a from the outlet 230 of the drying chamber 210 and flows through the indoor condenser 110.

Because the surface temperature of the indoor condenser 110 is very high, the air flowing through is heated and raised, then is sucked and pushed by the inner fan F1, and returns to the drying chamber 210 through the air outlet OA2 of the first chamber A and the inlet 220 of the drying chamber 210, when the air after the temperature is raised passes through the material to be dried, the liquid water in the material is evaporated and volatilized, and then enters the inside of the dryer 100 again, part of water vapor is changed into liquid water and then is discharged to the outdoor environment, and the material is gradually dried through continuous circulation.

(12) In this process, if the auxiliary fan F2 is also operated simultaneously with the inner fan F1, air entering the first chamber a from the outlet 230 of the drying chamber 210 is divided into two parts.

The first part directly flows through the indoor condenser 110, and is heated and dried.

The second portion enters the first passage of the sensible heat exchanger 140 via the auxiliary fan F2, and since the temperature thereof is higher than that of the sensible heat exchanger 140, heat transfer occurs, the sensible heat exchanger 140 is heated, and the second portion of air is cooled.

The second part of air continues to move forward and enters the second chamber B, then after heat exchange is performed by the indoor evaporator 120 with a high surface temperature, the temperature rises, and then the second air enters the sensible heat exchanger 140 to pass through the sensible heat exchanger 140 for heating.

The second portion of the air after exiting the sensible heat exchanger 140 also eventually reaches the indoor condenser 110.

Because the surface temperature of the indoor condenser 110 is very high, the first and second parts of air are heated and raised in temperature, then are sucked and pushed by the inner fan F1, and return to the drying chamber 210 through the air outlet OA2 of the first chamber A and the inlet 220 of the drying chamber 210, when the heated air passes through the material to be dried, the liquid water in the material is evaporated and gasified and volatilized, and then enters the inside of the dryer 100 again, part of water vapor is changed into liquid water and then is discharged to the outdoor environment, and the material is gradually dried through continuous circulation.

Since the indoor evaporator 130 is also a condenser in this process, the volume of the indoor condenser 110 itself can be made smaller, reducing costs.

In this process, the heat is released from both the indoor condenser 110 and the indoor evaporator 120, so that the auxiliary electric heating device 150 is not used, the energy consumption is reduced, and the energy efficiency is high.

This mode is suitable for heating the drying chamber 210.

(2) When the first four-way valve 170 is de-energized and the second four-way valve 170' is energized

The refrigerant flow path is described below.

Referring to fig. 3 and 5, the high-temperature and high-pressure gaseous refrigerant is discharged from the compressor 160, passes through the D end and the C end of the first four-way valve 170, enters the indoor condenser 110, passes through the D end and the E end of the second four-way valve 170 'after being discharged by the indoor condenser 110, enters the outdoor heat exchanger 120 to discharge heat, becomes the low-temperature and high-pressure liquid refrigerant, passes through the throttling device 180, becomes the low-temperature and low-pressure liquid refrigerant, and then passes through the indoor evaporator 120 to absorb heat, becomes the low-temperature and low-pressure gaseous refrigerant, passes through the C end and the S end of the second four-way valve 170' and the gas-liquid separator B, and then flows back to the compressor 160 to be compressed, and enters the next cycle.

In this process, as shown by the dashed line box in fig. 5, both the indoor condenser 110 and the outdoor heat exchanger 130 function as condensers, and as shown by the dashed line box in fig. 5, the indoor evaporator 120 functions as an evaporator.

Since the inner fan F1 and the auxiliary fan F2 are simultaneously operated, air entering the first chamber a from the outlet 230 of the drying chamber 210 is divided into two parts.

The arrowed flow direction of the two-part gas flow is described in conjunction with fig. 2.

The first portion is heated by flowing directly through the indoor condenser 110.

The second portion of the air continues to travel into the second chamber B and is cooled after it has been heat exchanged by the low surface temperature indoor evaporator 120. Because the air humidity is very high, the dew point temperature of the water vapor is very easy to reach after cooling, the water vapor in the air becomes condensed water to be adsorbed on the indoor evaporator 120, and the condensed water can be discharged to the external environment.

The second portion of air continues to pass through the sensible heat exchanger 140 again by the second passage of the sensible heat exchanger 140 for heat exchange.

Because the surface temperature of the indoor condenser 110 is very high, the first and second parts of air are heated and raised in temperature, then are sucked and pushed by the inner fan F1, and return to the drying chamber 210 through the air outlet OA2 of the first chamber A and the inlet 220 of the drying chamber 210, when the heated air passes through the material to be dried, the liquid water in the material is evaporated and gasified and volatilized, and then enters the inside of the dryer 110 again, part of water vapor is changed into liquid water and then is discharged to the outdoor environment, and the material is gradually dried through continuous circulation.

Here, the sensible heat exchanger 140 performs heat exchange between the low-temperature air after condensation and dehumidification and the hot and humid air to be dehumidified, so that the residual heat can be utilized to reduce the cold load of the hot and humid air after condensation and dehumidification, and the residual heat can be utilized to reduce the heat load of the cold air after dehumidification for recirculation and heating, and the use of the sensible heat exchanger 140 can reduce the work load of the heat pump system.

In this mode, the closed temperature rising and drying are performed on the drying chamber 210, and meanwhile, the closed dehumidification can also be performed on the hot and humid air in the drying chamber 210, so that the interference to the internal environment of the drying chamber 210 caused by the dehumidification to the outside is avoided.

In this application, a condensed water collecting device (not shown, for example, a water receiving tray) may be provided below the indoor evaporator 120 for collecting condensed water generated on the indoor evaporator 120.

Furthermore, a drain (not shown, such as a motor and a water pipe) is provided, which is connected to the condensed water collection device for draining the condensed water in the condensed water collection device, avoiding re-introduction of moisture when the air flow from the drying chamber 210 passes through the second chamber B.

In this process, since the indoor evaporator 120 serves as an evaporator, the temperature of the air flow entering the drying chamber 210 from the first chamber a of the dryer 100 may be affected, and thus, when the temperature of the drying chamber 210 does not meet the temperature requirement, the auxiliary electric heating device 150 may be turned on to achieve the temperature rising and dehumidification of the drying chamber 210.

(3) When the first four-way valve 170 is powered on and the second four-way valve 170' is powered off

The refrigerant flow path is described below.

Referring to fig. 3 and 6, the high-temperature and high-pressure gaseous refrigerant is discharged from the compressor 160, passes through the D end and the E end of the first four-way valve 170, enters the D end and the C end of the second four-way valve 170', enters the indoor evaporator 120, is discharged through the indoor evaporator 120, becomes a low-temperature and high-pressure liquid refrigerant, passes through the throttling device 180, becomes a low-temperature and low-pressure liquid refrigerant, passes through the outdoor heat exchanger 130 to absorb heat, becomes a low-temperature and low-pressure gaseous refrigerant, passes through the E end and the S end of the second four-way valve 170', and the gas-liquid separator B, and then flows back to the compressor 160 to be compressed, and enters the next cycle.

In this process, as shown by the dashed line box in fig. 6, the indoor evaporator 120 functions as a condenser, and as shown by the dashed line box in fig. 6, the outdoor heat exchanger 130 functions as an evaporator.

In this mode, the amount of refrigerant in the indoor condenser 110 is small and is substantially inactive.

The first portion flows directly through the indoor condenser 110 and the airflow is not substantially heated.

The second part of air continues to move forward and enters the second chamber B, then after heat exchange is performed by the indoor evaporator 120 with high surface temperature, the temperature rises, and then the second channel enters the sensible heat exchanger 140 to pass through the sensible heat exchanger 140 for heating.

Then the material is sucked and pushed by the inner fan F1, and returns to the drying chamber 210 through the air outlet OA2 of the first chamber A and the inlet 230 of the drying chamber 210, when the heated air passes through the material to be dried, the liquid water in the material is evaporated, gasified and volatilized, and then enters the inside of the dryer 100 again, part of water vapor is changed into liquid water and then discharged to the outdoor environment, and the material is gradually dried through continuous circulation.

In this mode, the heat release of the indoor evaporator 120 is mainly utilized to heat and dry the inside of the drying chamber 210.

In this process, since the indoor condenser 110 is substantially inactive, the temperature of the air flow entering the drying chamber 210 from the first chamber a of the dryer 110 may be affected, and thus, when the temperature of the drying chamber 210 does not meet the temperature requirement, the auxiliary electric heating device 150 may be turned on to heat up and dry the drying chamber 210.

(4) When the first four-way valve 170 is powered on and the second four-way valve 170' is powered on

The refrigerant flow path is described below.

Referring to fig. 3 and 7, the high-temperature and high-pressure gaseous refrigerant is discharged from the compressor 160, passes through the D end and the E end of the first four-way valve 170, enters the D end and the C end of the second four-way valve 170', enters the outdoor heat exchanger 130, is discharged through the outdoor heat exchanger 130, becomes a low-temperature and high-pressure liquid refrigerant, passes through the throttling device 180, becomes a low-temperature and low-pressure liquid refrigerant, absorbs heat through the indoor evaporator 120, becomes a low-temperature and low-pressure gaseous refrigerant, passes through the C end and the S end of the second four-way valve 170', and then flows back to the compressor 160 for compression, and enters the next cycle.

In this process, the outdoor heat exchanger 130 is used as a condenser, as shown by a dotted line frame in fig. 7, and the indoor evaporator 120 is used as an evaporator, as shown by a dotted line frame in fig. 7.

In this process, the amount of refrigerant flowing into the interior condenser 110 is small and substantially non-functional.

The first portion flows directly through the indoor condenser 110.

The second portion of the air continues to travel into the second chamber B and is cooled after heat exchange by the low surface temperature indoor evaporator 120. Because the air humidity is very high, the dew point temperature of the water vapor is very easy to reach after cooling, the water vapor in the air becomes condensed water to be adsorbed on the indoor evaporator 120, and the condensed water can be discharged to the external environment.

Then the material is sucked and pushed by the inner fan F1, and returns to the drying chamber 210 through the air outlet OA2 of the first chamber A and the inlet 220 of the drying chamber 210, and the material is gradually cooled.

In this mode, the indoor evaporator 120 is mainly used to evaporate and absorb heat, so as to cool the air flow in the drying chamber 210.

By switching the states of the first and second four-way valves 170 and 170', the requirements of the four different modes of the drying chamber 210 as described above are satisfied.

In the mode (2) as described above, when the air flow in the drying chamber 210 is dehumidified, the temperature in the drying chamber 210 itself may be relatively high in addition to the heating of the air flow in the drying chamber by the indoor condenser 110, and therefore, in order to achieve constant temperature dehumidification, the air flow in the drying chamber 210 may be cooled down by switching to the mode (4) in order to achieve a constant temperature dehumidification effect.

Therefore, the mode can be flexibly switched according to the use requirement of the drying chamber 210, so that the dryer 100 can be used in multiple scenes.

Referring to fig. 8 and 9, to ensure reliable operation of the heat pump system, the heat pump system further includes a pressure buffering device.

The pressure buffer device is provided in a flow path between the indoor evaporator 120 and the outdoor heat exchanger 130, which is not connected to the second flow path switching device 170', and buffers the refrigerant pressure of the refrigerant flowing out of the indoor evaporator 120 or the refrigerant pressure of the refrigerant flowing out of the outdoor heat exchanger 130.

Referring to fig. 8, the pressure buffering device includes a first reservoir 500 and a second reservoir 500'.

The first reservoir 500 is disposed on a flow path between the indoor evaporator 120 and the restriction 180, and the second reservoir 500' is disposed on a flow path between the outdoor heat exchanger 130 and the restriction 180, i.e., the first reservoir 500, the restriction 180, and the second reservoir 180 are sequentially connected in series.

In the modes (1) and (3) as described above, the refrigerant flows into the indoor evaporator 120, releases heat in the indoor evaporator 120, turns into a low-temperature high-pressure liquid refrigerant, and flows into the first accumulator 500.

The low-temperature and high-pressure liquid refrigerant flows into the first reservoir 500, and is buffered in the first reservoir 500 at a high pressure, so as to buffer the pressure impact of the flowing liquid refrigerant on the throttling device 180.

In the modes (2) and (4) as described above, the refrigerant flows into the outdoor heat exchanger 130, releases heat in the outdoor heat exchanger 130, becomes a low-temperature high-pressure liquid refrigerant, and flows into the second accumulator 500'.

The low-temperature and high-pressure liquid refrigerant flows into the second reservoir 500', and is buffered in the second reservoir 500', so as to buffer the pressure impact of the flowing liquid refrigerant on the throttling device 180.

Further still referring to fig. 8, a first filter 600 may also be provided in the flow path between the first reservoir 500 and the restriction 180, and a second filter 600 'may be provided in the flow path between the second reservoir 500' and the restriction 180.

The first filter 600 and the second filter 600' are used for filtering impurities in the refrigerant to purify the refrigerant, thereby ensuring the cleanliness of the refrigerant circulated back to the compressor 160 in the heat pump system.

In some embodiments herein, referring to fig. 9, a pressure buffering device may include a first switching assembly, a second switching assembly, and a reservoir 500.

The reservoir 500 and the restriction device 180 are connected in series and form a branch, see dashed box in fig. 9, in which the flow of coolant is from the reservoir 500 to the restriction device 180.

The first switching assembly is used for connecting one side and a branch of the indoor evaporator 120, which are not connected to the second flow path switching device 170', for buffering the pressure of the high pressure refrigerant from the indoor evaporator 120.

The second switching assembly is used for connecting one end and a branch of the outdoor heat exchanger 130, which are not connected to the second flow switching device 170', and is used for buffering the pressure of the high-pressure refrigerant from the outdoor heat exchanger 130.

The first switching assembly includes a first switching element 310 and a second switching element 320 connected in parallel, and the second switching assembly includes a third switching element 410 and a fourth switching element 420 connected in parallel.

The inlet end of the first opening and closing member 310 is connected to one end of the indoor evaporator 120, which is not connected to the second flow path switching device 170', and the outlet end of the first opening and closing member 310 is connected to the inlet side of the accumulator 500.

An inlet end of the third switching element 410 is connected to an end of the outdoor heat exchanger 130 not connected to the second flow path switching device 170', and an outlet end of the third switching element 410 is connected to an inlet side of the accumulator 500.

The inlet end of the second shutter 320 is connected to the refrigerant outflow end of the throttle device 180, and the outlet end of the second shutter 320 is connected to one end of the indoor evaporator 120, which is not connected to the second flow path switching device 170'.

The inlet end of the fourth closing element 420 is connected to the refrigerant outflow end of the throttling device 180, and the outlet end of the fourth closing element 420 is connected to one end of the outdoor heat exchanger 130 which is not connected to the second flow switching device 170'.

The opening and closing element may be an electromagnetic valve or a check valve.

In some embodiments of the present application, the setting of the switching element only needs to be able to perform pressure buffering by the high-pressure refrigerant flowing out of the indoor evaporator 120 through the liquid reservoir 500 when the second flow path switching device 170 'is powered off, and only needs to perform pressure buffering by the high-pressure refrigerant flowing out of the outdoor heat exchanger 130 through the liquid reservoir 500 when the second flow path switching device 170' is powered on.

Referring to fig. 9, in some embodiments of the present application, the first switching element 310, the second switching element 320, the third switching element 410, and the fourth switching element 420 are all selected as one-way valves.

The unidirectional conductivity of the unidirectional valve is utilized to realize the opening of the opening and closing element in the forward direction and the closing of the opening and closing element in the reverse direction.

As described above, the one-way valve has a communication-enabled flow path from the inlet end to the outlet end, whereas it has a non-communication-enabled flow path from the outlet end to the inlet end.

In some embodiments of the present application, a filter 600 may also be provided in the flow path between the reservoir 500 and the restriction 180.

The filter 600 is used for filtering impurities in the refrigerant to purify the refrigerant, thereby ensuring the cleanliness of the refrigerant when the refrigerant circulates back to the compressor 160 in the heat pump system.

The arrangement of fig. 9 adds a first switching assembly and a second switching assembly to the arrangement of fig. 8, but reduces one reservoir 500 'and one filter 600', reducing costs relative to the use of two reservoirs 500/500 'and two filters 600/600'.

In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. An open-close integrated dryer is connected with the drying chamber of heat pump roast room, its characterized in that includes:

the shell is provided with a first chamber, a second chamber and a third chamber, the first chamber is provided with an air inlet and an air outlet which are communicated with the drying chamber, the first chamber or the drying chamber is provided with an inner fan, and the third chamber is communicated with external fresh air;

The sensible heat exchanger is provided with a first channel and a second channel which are arranged in a staggered manner, the first channel is communicated with the air inlet and the air inlet side of the indoor evaporator, and the second channel is communicated with the air outlet side of the indoor evaporator and the air inlet side of the indoor condenser;

2. The opening/closing integrated dryer of claim 1, further comprising:

3. The opening and closing integrated dryer according to claim 1, wherein the indoor evaporator partitions the second chamber into:

4. The opening and closing integrated dryer as claimed in claim 3, wherein,

the sensible heat exchanger is obliquely arranged at one side of the indoor evaporator and is used for separating the first chamber from the second chamber;

the indoor evaporator is vertically arranged in the second cavity, and the top end of the indoor evaporator is abutted with the part, extending into the second cavity, of the sensible heat exchanger;

5. The opening and closing integrated dryer of claim 4, wherein,

the auxiliary fan is arranged on the inlet side of the first channel, and the auxiliary fan, the side wall of the first chamber and the inlet side of the first channel define a sealing space for receiving air flow to be entered into the first channel.

6. The opening/closing integrated dryer of claim 1, wherein the heat pump system further comprises:

A condensed water collecting device for collecting condensed water generated by the indoor evaporator when evaporating and absorbing heat;

and the discharging device is connected with the condensed water collecting device and is used for discharging condensed water collected in the condensed water collecting device.

7. The opening and closing integrated dryer according to claim 1, wherein,

the first flow path switching device is a first four-way valve, and the second flow path switching device is a second four-way valve;

when the first four-way valve and the second four-way valve are closed, the refrigerant flowing out of the compressor sequentially passes through the first four-way valve, the indoor condenser, the indoor evaporator, the throttling device and the outdoor heat exchanger, and then returns to the compressor;

when the first four-way valve is closed and the second four-way valve is opened, the refrigerant flowing out of the compressor sequentially passes through the first four-way valve, the indoor condenser, the outdoor heat exchanger, the throttling device and the indoor evaporator, and then returns to the compressor;

when the first four-way valve is opened and the second four-way valve is closed, the refrigerant flowing out of the compressor sequentially passes through the first four-way valve, the indoor evaporator, the throttling device and the outdoor heat exchanger, and then returns to the compressor;

8. The all-in-one dryer of claim 7, wherein the heat pump system further comprises a return branch having a capillary tube disposed thereon;

the first four-way valve is provided with a C end, an E end, a D end and an S end, wherein when the first four-way valve is closed, the D end and the C end of the first four-way valve are connected, the E end and the S end of the first four-way valve are connected, and when the first four-way valve is opened, the D end and the E end of the first four-way valve are connected, and the C end and the S end of the first four-way valve are connected;

9. The opening and closing integrated dryer of claim 1, wherein the pressure buffering means comprises:

10. The opening and closing integrated dryer of claim 1, wherein the pressure buffering means comprises:

a first switching assembly for connecting a side of the indoor evaporator, which is not connected to the second flow path switching device, and the branch line, for buffering the pressure of the high-pressure refrigerant flowing out of the indoor evaporator;

and the second switching assembly is used for connecting one side of the outdoor heat exchanger, which is not connected with the second flow path switching device, with the branch circuit and is used for buffering the pressure of the high-pressure refrigerant flowing out of the outdoor heat exchanger.